General Description

The AP3768 is a high performance AC/DC power supply controller for battery charger and adapter applications. The device uses Pulse Frequency Modulation (PFM) method to build discontinuous conduction mode (DCM) flyback power supplies.

Features

• Primary Side Control for Eliminating Opto-coupler and

Secondary CV/CC Control Circuitry

• 30mW No-load Input Power

• Programmable Output Cable Voltage Drop Compensation

• Proprietary CC Tightening Technique to Achieve

Vertical CC Profile

• Compensation for External Component Temperature Variations

• Flyback Topology in DCM Operation

• Random Frequency Adjustment to Reduce System EMI

• Built-in Soft Start

• Over Voltage Protection

• Short Circuit Protection

• SOIC-8 Package

Applications

• Adapter/Chargers for Cell/Cordless Phones,

DAs, MP3 and Other Portable Apparatus

• LED Driver

• Standby and Auxiliary Power Supplies